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|
#!/bin/bash
# updates a hardlinked backup
# licensed under the GPL version 3
# Copyright Miek Gieben, 2007 - 2008
prefix=@prefix@
datarootdir=@datarootdir@
exec_prefix=@exec_prefix@
datadir=@datadir@/rdup
sysconfdir=@sysconfdir@/rdup
lockdir=/var/lock
GNU_DEFS=rdup-snapshot.gnu
# common stuff
if ! source $datadir/shared.sh; then
# no _echo2
echo ** $0: Failed to source $datadir/shared.sh >&2
exit 1
fi
usage() {
cat << HELP
$PROGNAME [+N] DIR [DIR ...] DEST
This is a wrapper around rdup and rdup-snap
DIR - directories to back up
+N - Look N days back for previous backups, defaults to 8
hours when using -H
DEST - where to store the backup. This can be:
ssh://user@host/directory (note: no colon after the hostname
ssh://host/directory
file:///directory (note: 3 slashes)
/directory
directory
OPTIONS:
-k KEYFILE encrypt all files, using mcrypt (rdup-crypt)
-g encrypt all files, using gpg (rdup-gpg)
-z compress all files, using gzip (rdup-gzip)
-E FILE use FILE as an exclude list
-H perform hourly backups
-f force a full dump
-a write extended attributes for storing uid/gid
-v echo the files processed to stderr
-x pass -x to rdup
-h this help
-V print version
HELP
}
PROGNAME=$0
NOW=`date +%Y%m/%d`
c=""
ssh=""
pipe=""
l="-l"
enc=false
etc=~/.rdup
force=false
hour=""
DAYS=8
while getopts "E:k:vfgzxahHV" o; do
case $o in
E)
if [[ -z "$OPTARG" ]]; then
_echo2 "-E needs an argument"
exit 1
fi
E="-E $OPTARG"
;;
k)
if [[ -z "$OPTARG" ]]; then
_echo2 "-k needs an argument"
exit 1
fi
if [[ ! -r "$OPTARG" ]]; then
_echo2 "Cannot read keyfile \`$OPTARG': failed"
exit 1
fi
pipe="$pipe | @bindir@/rdup-crypt $OPTARG"
if $enc; then
_echo2 "Encryption already set"
exit 1
fi
enc=true
c="-c"
;;
z) pipe="$pipe | @bindir@/rdup-gzip"
if $enc; then
_echo2 "Select compression first, then encryption"
exit 1
fi
c="-c"
;;
g) pipe="$pipe | @bindir@/rdup-gpg"
if $enc; then
_echo2 "Encryption already set"
exit 1
fi
enc=true
c="-c"
;;
f) force=true;;
a) OPT="$OPT -a";;
v) OPT="$OPT -v";;
x) x="-x";;
H) NOW=`date +%Y%m/%d/%H`;hour="-H";;
h) usage && exit;;
V) version && exit;;
\?) _echo2 "Invalid option: $OPTARG"; exit 1;;
esac
done
shift $((OPTIND - 1))
if [[ ${1:0:1} == "+" ]]; then
DAYS=${1:1}
if [[ $DAYS -lt 1 || $DAYS -gt 99 ]]; then
_echo2 "+N needs to be a number [1..99]"
exit 1
fi
shift
else
DAYS=8
fi
if [[ $# -eq 0 ]]; then
usage
exit
fi
i=1; last=$#; DIRS=
while [[ $i -lt $last ]]; do
DIRS="$DIRS $1"
shift
((i=$i+1))
done
# rdup [options] source destination
#dest="ssh://elektron.atoom.net/directory"
#dest="ssh://elektron.atoom.net/directory/var/"
#dest="file:///var/backup"
#dest="/var/backup"
#dest="ssh://miekg@elektron.atoom.net/directory"
dest=$1
if [[ ${dest:0:6} == "ssh://" ]]; then
rest=${dest/ssh:\/\//}
u=`echo $rest | cut -s -f1 -d@`
rest=${rest/$u@/}
h=`echo $rest | cut -s -f1 -d/`
BACKUPDIR=${rest/$h/}
c="-c"
l="" # enable race checking in rdup
if [[ -z $u ]]; then
ssh=" ssh -x $h"
else
ssh=" ssh -x $u@$h"
fi
fi
if [[ ${dest:0:7} == "file://" ]]; then
rest=${dest/file:\/\//}
BACKUPDIR=$rest
fi
if [[ ${dest:0:1} == "/" ]]; then
BACKUPDIR=$dest
fi
# no hits above, assume relative filename
if [[ -z $BACKUPDIR ]]; then
BACKUPDIR=`pwd`/$dest
fi
if [[ -z $BACKUPDIR ]]; then
usage
exit 1
fi
# change all / to _ to make a valid filename
IDENT=$(echo $dest | sed 's/\/\/*/_/g')
STAMP=$etc/timestamp.$HOSTNAME_$IDENT
LIST=$etc/list.$HOSTNAME_$IDENT
create_rdup $etc
# create our command line
if [[ -z $ssh ]]; then
pipe="$pipe | ${exec_prefix}/bin/rdup-snap $c $OPT -b $BACKUPDIR/$NOW"
else
pipe="$pipe | $ssh rdup-snap $c $OPT -b $BACKUPDIR/$NOW"
fi
cmd="${exec_prefix}/bin/rdup $E $x $l $c -N $STAMP $LIST $DIRS $pipe"
if ! $force; then
if [[ -z $ssh ]]; then
${exec_prefix}/bin/rdup-snap-link $hour $DAYS $BACKUPDIR $NOW
purpose=$?
else
$ssh "rdup-snap-link $hour $DAYS $BACKUPDIR $NOW"
purpose=$?
fi
else
purpose=1
fi
case $purpose in
0) _echo2 "INCREMENTAL DUMP" ;;
1)
_echo2 "FULL DUMP"
rm -f $LIST
rm -f $STAMP ;;
*)
_echo2 "Illegal return code from rdup-snap-link"
exit 1 ;;
esac
# execute the backup command
#_echo2 "Executing: ${cmd}"
eval ${cmd}
|
